DSM-5-TR PSYCHIATRIC TEXTBOOK

Every psychiatric diagnosis is a kind of agreement. When a clinician says that a person has major depressive disorder (MDD), generalized anxiety disorder (GAD), or schizophrenia, the words do not point to a blood test or a scan that proves the condition exists. They point instead to a shared set of definitions, negotiated by committees of clinicians and researchers, that tells everyone who reads the chart what pattern of symptoms, course, and impairment is being described. The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR), published by the American Psychiatric Association (APA) in 2022, is the document in which the United States has written down most of those agreements. Understanding what it is, how it came to be, and what it can and cannot do is the foundation for everything that follows in this textbook.

1. 1.1 From DSM-I to DSM-5-TR: How the Manual Evolved
2. 1.2 What Changed in the Text Revision
3. 1.3 Categorical, Dimensional, and Hybrid Models of Diagnosis
4. 1.4 Reading a Diagnosis: Specifiers, Severity, and Unspecified Categories
5. 1.5 The Manual's Strengths, Limits, and Criticisms
6. 1.6 Using the DSM-5-TR Responsibly in Clinical and Legal Settings
7. 1.7 Principles Behind the Chapter Order

Diagnosis in psychiatry begins with a conversation and ends, for the time being, with a judgment. Unlike many fields of medicine, where an image, a culture, or a laboratory value can establish or exclude a condition, the evidence that supports a psychiatric diagnosis is gathered mainly from what a person says, what others report, and what the clinician observes. The quality of the diagnosis therefore rises and falls with the quality of the interview. A rushed, checklist-driven encounter produces a long list of symptoms and little understanding, while a skilled interview, in which the person feels safe enough to describe what is truly happening, produces a coherent account of an illness unfolding in a life. The classification system described in Chapter 1 supplies the vocabulary of diagnosis; the interview supplies the facts that the vocabulary must describe.

1. 2.1 Building Rapport and Structuring the Interview
2. 2.2 The Chief Complaint and History of Present Illness
3. 2.3 Psychiatric, Medical, Substance, and Family History
4. 2.4 Collateral Information and Informant Reliability
5. 2.5 Generating and Narrowing a Differential Diagnosis
6. 2.6 Ruling Out Medical Causes and Medication Effects
7. 2.7 Common Reasoning Errors and How to Avoid Them

If the interview records what a person says about their experience, the mental status examination (MSE) records what the clinician sees and hears while the person is in the room. It is the psychiatric counterpart of the physical examination: a systematic, standardized description of a person's appearance, behavior, speech, emotional state, thinking, perception, cognition, insight, and judgment at the time of the encounter. Where a physical examination can be repeated after treatment and compared with the first, so can the mental status examination, and a series of such examinations is often the clearest way to see whether an illness is improving, worsening, or changing character. Because it is a snapshot of one moment and not a history, it must always be dated and interpreted in the light of the story that surrounds it.

1. 3.1 Appearance, Behavior, and Psychomotor Activity
2. 3.2 Speech, Mood, and Affect
3. 3.3 Thought Process and Thought Content
4. 3.4 Perception, Orientation, and Cognition
5. 3.5 Insight and Judgment
6. 3.6 Rating Scales and Structured Diagnostic Interviews
7. 3.7 Documenting and Communicating Findings

Every mental disorder described in the diagnostic manual is, at some level, a disorder of a living nervous system embedded in a body, a family, and a community. Yet the manual itself is deliberately descriptive: it organizes diagnoses by clusters of symptoms, course, and impairment rather than by cause, because for most conditions no single cause has been identified and none is likely to be. Understanding why people develop psychiatric illness therefore means holding several kinds of explanation at once: inherited variation in how brains are built and regulated, the chemistry through which neurons communicate, the circuits that generate emotion, memory, and decision making, the stress-response systems that connect experience to physiology, the developmental windows during which the brain is especially sensitive to its surroundings, and the social conditions that shape exposure to all of the above.

1. 4.1 Genetics and Heritability
2. 4.2 Neurotransmitter Systems
3. 4.3 Brain Circuits Involved in Emotion and Behavior
4. 4.4 Stress, the Hypothalamic-Pituitary-Adrenal Axis, and Inflammation
5. 4.5 Neurodevelopment and Early Adversity
6. 4.6 The Biopsychosocial Model in Practice
7. 4.7 Limits of Biological Explanation

The neurodevelopmental disorders are the first group of diagnoses in the manual because they are the conditions whose onset lies earliest in life. They share the feature that something about the way the developing brain acquires skills, whether thinking and learning, language and speech, or social reciprocity, departs from typical expectations, and that this departure causes impairment in personal, social, academic, or occupational functioning. The deficits range from specific and narrow, such as difficulty producing particular speech sounds, to broad, such as global limitations in intellectual and adaptive functioning. Because these conditions are rooted in development, they unfold over a lifetime: a child with a language delay may become an adult with a social communication difficulty, and a toddler who does not respond to name may become a teenager whose strengths and needs can only be understood in the context of school, friendships, and family.

1. 5.1 Intellectual Developmental Disorder
2. 5.2 Language, Speech, and Social Communication Disorders
3. 5.3 Autism Spectrum Disorder: Core Features
4. 5.4 Autism Across Ages and Presentations
5. 5.5 Differential Diagnosis and Co-occurring Conditions
6. 5.6 Assessment, Early Identification, and Screening
7. 5.7 Support, Intervention, and Family Involvement

The conditions in this chapter occupy the practical center of child and adolescent mental health. They are the diagnoses most often behind the school referral, the pediatric visit about a child who cannot sit still or cannot read, the parent's worry about repeated blinking or throat clearing, and, increasingly, the adult's realization that a lifetime of disorganization and missed deadlines has a name. Attention-deficit/hyperactivity disorder (ADHD), specific learning disorder, developmental coordination disorder, stereotypic movement disorder, and the tic disorders, including Tourette's disorder, are all neurodevelopmental conditions. They begin in the developmental period, they are shaped by genetic and biological influences described in Chapter 4, and they produce difficulties in attention, academic skills, or movement that interfere with school, work, and relationships.

1. 6.1 Attention-Deficit/Hyperactivity Disorder: Presentation and Course
2. 6.2 Diagnosing ADHD in Children, Adolescents, and Adults
3. 6.3 Specific Learning Disorder
4. 6.4 Developmental Coordination Disorder and Stereotypic Movement Disorder
5. 6.5 Tourette's Disorder and Other Tic Disorders
6. 6.6 Comorbidity and Differential Diagnosis
7. 6.7 Treatment Approaches

Few categories in psychiatry carry as much weight, or as much misunderstanding, as the schizophrenia spectrum. These disorders disturb the most basic feature of mental life: the ability to tell what is happening inside one's own mind from what is happening in the shared world outside it. A person with a psychotic disorder may hear voices that no one else hears, hold convictions that no evidence can shake, speak in ways that others cannot follow, or withdraw so completely that the ordinary signals of emotion and motivation seem to have gone quiet. Because these experiences are so far from everyday perception, the people who have them are often frightened, isolated, and misjudged, and the clinicians who meet them in emergency departments, inpatient units, jails, and clinics bear a particular responsibility to be accurate, humane, and unhurried.

1. 7.1 Positive, Negative, and Disorganized Symptoms
2. 7.2 Schizophrenia: Onset, Course, and Prognosis
3. 7.3 Schizophreniform, Schizoaffective, and Brief Psychotic Disorders
4. 7.4 Delusional Disorder and Substance- or Medical-Induced Psychosis
5. 7.5 Catatonia: Recognition and Specifiers
6. 7.6 Neurobiology and Risk Factors
7. 7.7 Differential Diagnosis and Treatment Principles

Mood is the sustained emotional climate of a person's life, and most people experience it as something that moves within a comfortable range, rising with good news and sinking with loss, but staying tethered to circumstances. In the bipolar and related disorders, mood and the energy that accompanies it detach from circumstance and swing to extremes: periods of unusual elation, irritability, and driven activity alternate with, or are mixed together with, periods of depression. The word bipolar suggests two opposite poles, but the lived experience is more complex than a simple oscillation. Many people spend more time depressed than elevated, many have symptoms from both poles at once, and the course across a lifetime can be highly variable, with long stretches of wellness and periods of severe disruption.

1. 8.1 Mania and Hypomania
2. 8.2 Bipolar I Disorder
3. 8.3 Bipolar II and Cyclothymic Disorders
4. 8.4 Mixed Features and Rapid Cycling
5. 8.5 Distinguishing Bipolar from Unipolar Depression
6. 8.6 Course, Comorbidity, and Medical Mimics
7. 8.7 Treatment and Long-Term Management

Sadness is a universal human experience, and nearly everyone knows what it is to grieve a loss, to feel low after a disappointment, or to move through a hard season of life with little energy and less hope. Depression as a clinical condition is something more than this. It is a syndrome in which sustained low mood, loss of interest or pleasure, and a cluster of changes in sleep, appetite, energy, concentration, and self-regard persist long enough, and cut deeply enough, to impair a person's ability to work, study, parent, and love. It is among the most common and most disabling health conditions in the world, a leading contributor to lost years of healthy life, and a major risk factor for suicide. It is also among the most treatable conditions in medicine, and a large proportion of those who suffer from it never receive adequate care.

1. 9.1 Major Depressive Disorder: Core Symptoms
2. 9.2 Specifiers: Anxious Distress, Melancholic, Atypical, Seasonal
3. 9.3 Persistent Depressive Disorder
4. 9.4 Premenstrual Dysphoric and Disruptive Mood Dysregulation Disorders
5. 9.5 Grief, Adjustment, and Prolonged Grief Disorder
6. 9.6 Differential Diagnosis and Medical Contributors
7. 9.7 Treatment Approaches

Few clinical responsibilities carry the moral weight and the practical urgency of assessing whether a person is at risk of dying by suicide. Suicide is not a diagnosis in its own right, and it is not confined to any single psychiatric disorder. It is an outcome that can emerge from many pathways, and the clinician's task is to recognize the pathways early, ask about them directly, estimate the person's risk and the modifiability of that risk, and build a plan that keeps the person alive while the underlying problems are treated. Because suicidal thoughts and behaviors cut across every chapter of this book, from depressive and bipolar disorders to psychosis, substance use, trauma and personality disorders, a student who learns this chapter well carries a skill that applies in every setting where people are seen, whether an emergency department, a primary care clinic, a school, a correctional facility, or a telehealth visit.

1. 10.1 Epidemiology and Risk Factors
2. 10.2 Protective Factors and Warning Signs
3. 10.3 Suicidal Behavior and Nonsuicidal Self-Injury in the DSM-5-TR
4. 10.4 Structured Risk Assessment
5. 10.5 Safety Planning and Means Restriction
6. 10.6 Levels of Care and Disposition
7. 10.7 Documentation and Clinician Responses to Patient Suicide

Anxiety is among the oldest and most useful of human emotions. It prepares the body to meet danger, sharpens attention, and motivates people to prepare for the exam, check the lock, or leave the unsafe place. The anxiety disorders arise when this protective system misfires: when fear is triggered by things that pose little real threat, when worry persists long after any plausible danger has passed, or when avoidance of feared situations begins to shrink a person's life. Taken together, the anxiety disorders are among the most common mental health conditions in the United States, they frequently begin in childhood or adolescence, and they commonly coexist with depression, substance use and medical illness. Many people live with them for years before treatment, in part because the symptoms, which are often physical, lead patients first to emergency departments and primary care offices.

1. 11.1 Normal Anxiety Versus Pathological Anxiety
2. 11.2 Generalized Anxiety Disorder
3. 11.3 Panic Disorder and Agoraphobia
4. 11.4 Social Anxiety Disorder
5. 11.5 Specific Phobias, Separation Anxiety, and Selective Mutism
6. 11.6 Differential Diagnosis and Medical Mimics
7. 11.7 Treatment Approaches

Some of the most distressing psychiatric symptoms are those that a person recognizes as strange, resists, and cannot stop. A new mother is flooded with horrifying images of harm coming to her infant and spends hours checking and reassuring herself. A college student washes her hands until the skin cracks. A man with a perfectly ordinary appearance spends hours each day examining a nose that he is certain is grotesque. These are the territory of the obsessive-compulsive and related disorders, a group of conditions defined by preoccupations and repetitive behaviors that consume time, produce distress and narrow a life. They are frequently hidden, because patients are ashamed of their thoughts and fear being judged dangerous or insane, and as a result many wait years before anyone asks the right questions.

1. 12.1 Obsessions, Compulsions, and Insight Specifiers
2. 12.2 Obsessive-Compulsive Disorder
3. 12.3 Body Dysmorphic Disorder
4. 12.4 Hoarding Disorder
5. 12.5 Trichotillomania and Excoriation Disorder
6. 12.6 Differential Diagnosis and Comorbidity
7. 12.7 Treatment, Including Exposure and Response Prevention

Trauma- and stressor-related disorders occupy a distinctive place in the diagnostic manual because, unlike most conditions in psychiatry, their definition begins with an event in the person's life. A diagnosis in this group requires that the individual has been exposed to a traumatic or stressful experience, and the symptoms that follow are understood in relation to that exposure. This does not mean that the event alone explains the illness. Most people who experience even severe adversity do not develop a disorder, and two people exposed to the same event can have very different trajectories. The clinical task is therefore twofold: to understand what happened and what it meant to this person, and to understand why the response has become impairing, persistent, or disorganizing.

1. 13.1 Trauma Exposure and Individual Response
2. 13.2 Posttraumatic Stress Disorder
3. 13.3 Acute Stress Disorder
4. 13.4 Adjustment Disorders
5. 13.5 Reactive Attachment and Disinhibited Social Engagement Disorders
6. 13.6 Complex Presentations and Comorbidity
7. 13.7 Trauma-Informed Care and Treatment

Dissociation is a disruption in the normally integrated functions of consciousness, memory, identity, emotion, perception, body representation, motor control, and behavior. In everyday life most people experience mild forms of it without distress: absorbed in a book, a driver arrives at a destination with no memory of the last few miles, or a person daydreams through a lecture. These ordinary experiences lie on a continuum with the pathological forms described in this chapter, in which the disruption is persistent, distressing, and disabling. The disorders in this group share the central feature that something that should be connected in the mind is not: memory from awareness, identity from self-experience, the self from the body, or the world from a sense of reality.

1. 14.1 The Nature of Dissociation
2. 14.2 Dissociative Identity Disorder
3. 14.3 Dissociative Amnesia
4. 14.4 Depersonalization/Derealization Disorder
5. 14.5 Assessment and Differential Diagnosis
6. 14.6 Trauma History and Controversies
7. 14.7 Treatment Approaches

Few clinical situations test a practitioner's patience and skill as consistently as the patient whose symptoms are real, distressing, and disabling, but whose physical examination and tests do not explain them. Pain that has no clear source, fatigue that no laboratory abnormality accounts for, a limb that will not move although the nerves and muscles are intact, or a conviction of serious illness that repeated reassurance does not relieve are encountered in every specialty. Primary care clinicians, neurologists, gastroenterologists, cardiologists, and pain specialists see them daily, and a substantial share of health care utilization and cost is attributable to them. The patients are often frustrated, having been told by well-meaning clinicians that nothing is wrong or that the problem is all in their head, and the clinicians are often frustrated in turn.

1. 15.1 Somatic Symptom Disorder
2. 15.2 Illness Anxiety Disorder
3. 15.3 Conversion Disorder (Functional Neurological Symptom Disorder)
4. 15.4 Factitious Disorder
5. 15.5 Psychological Factors Affecting Other Medical Conditions
6. 15.6 The Clinical Relationship with the Patient Who Has Medically Unexplained Symptoms
7. 15.7 Treatment and Care Coordination

Few areas of psychiatry sit as close to the body as feeding and eating disorders. Eating is among the most basic behaviors that sustain life, and it is also saturated with meaning: family ritual, cultural identity, religion, comfort, control, reward, and self-worth all travel through the act of eating. When the relationship between a person and food becomes disordered, the consequences ripple across every organ system, and the psychological suffering is often as severe as the physical harm. The DSM-5-TR groups together disorders in which a persistent disturbance of eating or eating-related behavior leads to altered consumption or absorption of food and significantly impairs physical health or psychosocial functioning. The chapter that follows treats these conditions as genuine, biologically and socially influenced illnesses, not as lifestyle choices, vanity, or failures of willpower.

1. 16.1 Anorexia Nervosa
2. 16.2 Bulimia Nervosa
3. 16.3 Binge-Eating Disorder
4. 16.4 Avoidant/Restrictive Food Intake Disorder, Pica, and Rumination Disorder
5. 16.5 Medical Complications and Monitoring
6. 16.6 Differential Diagnosis and Comorbidity
7. 16.7 Treatment and Levels of Care

Sleep occupies roughly a third of human life, yet for most of medical history it was treated as an empty interval between the more interesting hours of wakefulness. Modern sleep science has overturned that view. Sleep is an active, organized, tightly regulated state in which the brain consolidates memory, regulates emotion, clears metabolic byproducts, and coordinates hormonal and immune function, while the body restores itself. When sleep is disturbed, the consequences are felt in mood, attention, pain tolerance, appetite, blood pressure, glucose regulation, and risk of accidents. The relationship between sleep and mental illness is so intimate that disturbed sleep is a diagnostic feature of depression, mania, anxiety disorders, posttraumatic stress disorder, psychosis, and substance use disorders, and it is often among the earliest signs of relapse.

1. 17.1 Normal Sleep and Its Regulation
2. 17.2 Insomnia Disorder
3. 17.3 Hypersomnolence and Narcolepsy
4. 17.4 Breathing-Related Sleep Disorders
5. 17.5 Circadian Rhythm Sleep-Wake Disorders
6. 17.6 Parasomnias and Restless Legs Syndrome
7. 17.7 Sleep and Psychiatric Comorbidity: Assessment and Treatment

Learning to control the bladder and bowel is one of the first major acts of self-regulation in a child's life, and it is a milestone that families, schools, and communities notice and discuss. Control develops through the gradual maturation of the nervous system, the growth of the bladder, the emergence of the ability to sense fullness and to delay, and learning shaped by the family's expectations and routines. For most children the process finishes without incident in the early school years. For a minority, bedwetting or soiling continues beyond the age at which it is expected, and the resulting problem can cast a long shadow, affecting self-esteem, friendships, family relationships, and a child's willingness to attend sleepovers, camps, and school trips. The elimination disorders in the DSM-5-TR, enuresis and encopresis, describe these problems when they persist at an age at which control is expected and are not explained by a substance or medical condition.

1. 18.1 Enuresis
2. 18.2 Encopresis
3. 18.3 Developmental and Medical Considerations
4. 18.4 Assessment and Differential Diagnosis
5. 18.5 Behavioral and Medical Treatment
6. 18.6 Family Impact and Communication
7. 18.7 Special Situations and Follow-Up

Few areas of clinical practice are surrounded by as much silence, embarrassment, and inherited judgment as sexuality and gender. Patients rarely volunteer concerns about sexual functioning, and clinicians, in turn, often avoid asking, so that treatable problems persist for years behind closed doors. The diagnostic categories gathered in this chapter, the sexual dysfunctions, gender dysphoria, and the paraphilic disorders, share a history of being misunderstood, pathologized, and at times weaponized. Understanding them well requires both technical precision and a particular kind of professional posture: curious, unembarrassed, nonjudgmental, and attentive to the ways culture, power, and consent shape what counts as a problem.

1. 19.1 Sexual Response and the Sexual Dysfunctions
2. 19.2 Assessing Sexual Concerns Respectfully
3. 19.3 Gender Dysphoria: Definition and Presentation
4. 19.4 Distinguishing Gender Diversity from Disorder
5. 19.5 Paraphilias Versus Paraphilic Disorders
6. 19.6 Ethical, Legal, and Cultural Considerations
7. 19.7 Treatment and Supportive Care

Every society depends on its members’ ability to regulate their emotions and behavior well enough to live alongside others. Children learn this skill gradually, through temperament, parenting, schooling, and the slow maturation of the brain’s control systems, and most arrive at adulthood able to tolerate frustration, delay gratification, and respect rules and the rights of others. For a significant minority, the process goes awry. Their anger is quick and intense, their defiance persistent, their rule-breaking serious, or their impulses so powerful that they act before thinking, sometimes with devastating consequences for themselves and others. The DSM-5-TR gathers these problems into a single chapter, the disruptive, impulse-control, and conduct disorders, defined by difficulties with self-control of emotions and behavior that bring a person into conflict with others and with social norms.

1. 20.1 Oppositional Defiant Disorder
2. 20.2 Conduct Disorder
3. 20.3 Intermittent Explosive Disorder
4. 20.4 Pyromania and Kleptomania
5. 20.5 Risk Factors and Developmental Pathways
6. 20.6 Differential Diagnosis and Comorbidity
7. 20.7 Evidence-Based Interventions

Substance use disorders occupy a distinctive place in psychiatry. They are among the most common mental health conditions, they cut across every age, income level, and cultural group, and they are involved in a large share of emergency visits, hospital admissions, injuries, and premature deaths in the United States. They are also among the most treatable, although only a minority of people who meet criteria ever receive specialty care. The persistent gap between need and treatment reflects stigma, fragmented services, cost, and a long history of viewing addiction as a moral failing rather than a medical condition. Contemporary neuroscience and clinical research support a different understanding: addiction is a chronic, relapsing condition in which repeated exposure to a substance alters the brain’s motivation, learning, and self-control circuitry.

1. 21.1 The Substance Use Disorder Framework and Severity Levels
2. 21.2 Alcohol Use, Intoxication, and Withdrawal
3. 21.3 Opioid Use Disorder, Overdose, and Withdrawal
4. 21.4 Sedative, Hypnotic, and Anxiolytic Use Disorders
5. 21.5 Neurobiology of Addiction
6. 21.6 Co-occurring Disorders
7. 21.7 Treatment and Medications for Addiction

Substance use disorders sit at an unusual junction in psychiatry. They are defined by behavior and by the brain's adaptation to repeated exposure, yet they are shaped at every step by biology, development, trauma, culture, law, and the economic realities of the communities in which people live. The previous chapter introduced the general framework of substance-related and addictive disorders, including the logic of the eleven-item symptom count, the severity ratings of mild, moderate, and severe, and the distinction between intoxication, withdrawal, and use disorder. This chapter applies that framework to the stimulants, cannabis, hallucinogens, phencyclidine, inhalants, tobacco, and the one behavioral condition that the manual places alongside them, gambling disorder.

1. 22.1 Stimulant Use Disorders
2. 22.2 Cannabis Use and Cannabis-Related Disorders
3. 22.3 Hallucinogens and Phencyclidine
4. 22.4 Inhalants and Other Substances
5. 22.5 Tobacco Use Disorder
6. 22.6 Gambling Disorder and Behavioral Addictions
7. 22.7 Assessment, Harm Reduction, and Treatment

The neurocognitive disorders are distinctive among the conditions in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR) because they are defined by a decline from a previously attained level of function in one or more cognitive domains, and because, unlike most psychiatric diagnoses, the underlying brain disease can often be identified. The manual organizes this group around three syndromes, delirium, mild neurocognitive disorder, and major neurocognitive disorder, and then specifies the etiology when it can be determined, whether Alzheimer's disease, vascular disease, Lewy body disease, frontotemporal degeneration, traumatic brain injury, substance or medication effects, human immunodeficiency virus (HIV) infection, prion disease, Parkinson's disease, Huntington's disease, or another medical condition. The term dementia remains in common use and the manual permits its use where it is customary, but the preferred diagnostic language is major neurocognitive disorder.

1. 23.1 Delirium
2. 23.2 Major and Mild Neurocognitive Disorder
3. 23.3 Alzheimer's Disease and Vascular Neurocognitive Disorder
4. 23.4 Lewy Body, Frontotemporal, and Other Etiologies
5. 23.5 Cognitive Assessment and Differential Diagnosis
6. 23.6 Behavioral and Psychological Symptoms of Dementia
7. 23.7 Management, Caregivers, and Safety

Personality is the enduring pattern of how a person perceives, interprets, feels about, and responds to themselves, other people, and the world. Everyone has a characteristic style, and most variation in that style falls within the wide range of normal human temperament. A personality disorder is diagnosed when the pattern becomes so rigid, pervasive, and maladaptive, and so clearly departs from the expectations of the person's culture, that it causes significant distress or impairment in relationships, work, and the sense of self. The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR) describes ten specific personality disorders, grouped into three clusters on the basis of descriptive similarities, along with categories for personality change due to another medical condition and for other specified or unspecified personality disorders.

1. 24.1 The General Definition of a Personality Disorder
2. 24.2 Paranoid, Schizoid, and Schizotypal Personality Disorders
3. 24.3 Antisocial Personality Disorder
4. 24.4 Borderline Personality Disorder
5. 24.5 Histrionic and Narcissistic Personality Disorders
6. 24.6 Differential Diagnosis and Stigma
7. 24.7 Treatment Approaches

Personality disorders are defined by enduring patterns of inner experience and behavior that deviate markedly from cultural expectations, begin by adolescence or early adulthood, remain stable over time, and lead to distress or impairment. Chapter 24 introduced the general criteria for personality disorder and described Clusters A and B, in which odd, eccentric, dramatic, emotional, and erratic presentations tend to draw clinical attention through crisis, conflict, or risk. Cluster C is different in tone. The disorders grouped here, avoidant, dependent, and obsessive-compulsive personality disorders, are characterized by anxiety, fearfulness, and an intense need for safety, approval, or control. Their owners rarely generate emergencies. They are far more likely to appear in primary care, outpatient therapy, or a university counseling center, presenting with anxiety, depression, somatic complaints, or relationship distress, while the underlying personality pattern goes unnamed for years.

1. 25.1 Avoidant Personality Disorder
2. 25.2 Dependent Personality Disorder
3. 25.3 Obsessive-Compulsive Personality Disorder
4. 25.4 Personality Change Due to Another Medical Condition
5. 25.5 The Alternative DSM-5 Model for Personality Disorders
6. 25.6 Dimensional Approaches and Future Directions
7. 25.7 Psychotherapy for Personality Pathology

Psychopharmacology is the use of medications that act on the central nervous system to treat mental disorders, and it rests on two simple questions that are surprisingly hard to answer well: what does the body do to the drug, and what does the drug do to the body? The first question is pharmacokinetics, the study of absorption, distribution, metabolism, and elimination. The second is pharmacodynamics, the study of the molecular targets, receptor interactions, and downstream effects that produce both benefit and harm. A clinician who understands both can anticipate why a medication works more slowly than hoped, why one patient develops side effects at a level another tolerates easily, why two drugs that are safe individually can be dangerous together, and why an apparently minor change in circumstances, such as pregnancy, kidney disease, or a new antibiotic, can transform a stable regimen into a problem.

1. 26.1 Pharmacokinetics and Pharmacodynamics
2. 26.2 Antidepressants
3. 26.3 Antipsychotics
4. 26.4 Mood Stabilizers
5. 26.5 Anxiolytics, Hypnotics, and Stimulants
6. 26.6 Monitoring, Adverse Effects, and Drug Interactions
7. 26.7 Prescribing in Special Populations

Psychotherapy is the deliberate use of a professional relationship and structured techniques to relieve distress, change patterns of thinking, feeling, and behaving, and improve a person's functioning and quality of life. Alongside medication, it forms one of the two principal pillars of treatment for mental disorders, and for many conditions, including mild to moderate depression, most anxiety disorders, obsessive-compulsive disorder, posttraumatic stress disorder, and the personality disorders discussed in Chapter 25, it is the first-line treatment or at least an equal partner to medication. Psychosocial treatments broaden this picture to include approaches that work on a person's environment and daily life as well as their inner experience: supported employment and housing, family education, peer support, case management, and community-based programs that help people with serious mental illness live meaningful lives.

1. 27.1 Choosing a Treatment Modality
2. 27.2 Cognitive Behavioral Therapy
3. 27.3 Dialectical Behavior Therapy and Third-Wave Approaches
4. 27.4 Psychodynamic and Interpersonal Therapies
5. 27.5 Family, Group, and Couples Therapy
6. 27.6 Brain Stimulation and Other Somatic Treatments
7. 27.7 Measurement-Based Care and the Therapeutic Alliance

Psychiatric diagnosis is usually a slow and deliberate craft, built from careful history, longitudinal observation, collateral information, and repeated reassessment. Psychiatric emergencies invert that rhythm. A person arrives in an emergency department, a clinic waiting room, a school office, a jail, or a living room in a state of acute danger or acute disorganization, and the clinician must act well before a complete diagnostic picture is possible. The task in those first minutes is not to name the disorder but to keep everyone safe, to find out what is driving the crisis, to rule out medical causes that can mimic or precipitate psychiatric symptoms, and to begin a relationship in which the person can eventually accept help.

1. 28.1 Recognizing and Triaging Psychiatric Emergencies
2. 28.2 De-escalation of Agitation
3. 28.3 Involuntary Treatment, Capacity, and Consent
4. 28.4 Confidentiality and Duty to Protect
5. 28.5 Seclusion, Restraint, and Patient Rights
6. 28.6 Professional Boundaries and Ethical Dilemmas
7. 28.7 Documentation and Risk Management

A psychiatric diagnosis is a clinical judgment made by a particular person, in a particular encounter, about another person whose life has been shaped by a particular family, community, language, history, and set of social circumstances. The diagnostic manual supplies categories that aspire to be universal, yet every symptom described in it is felt, named, explained, and reported through culture. What counts as a normal reaction to bereavement, whether hearing a deceased relative's voice is a sign of illness or a sign of connection, whether fatigue and aches are an emotional problem or a bodily one, and whether a person speaks of their distress at all or holds it in silence, are all questions that cannot be answered without knowing the person's world. Diagnosis that ignores this context is not neutral; it is simply culturally unexamined.

1. 29.1 How Culture Shapes the Expression of Distress
2. 29.2 The Cultural Formulation Interview
3. 29.3 Cultural Concepts of Distress
4. 29.4 Bias and Structural Inequity in Diagnosis
5. 29.5 Working with Interpreters
6. 29.6 Race, Ethnicity, Gender, and Sexual Orientation in Care
7. 29.7 Building Culturally Responsive Practice

Every preceding chapter of this book has examined a family of disorders: what each captures, how it presents, and what distinguishes it from its neighbors. Real patients, however, do not arrive sorted into chapters. A single person may present with low mood, poor sleep, heavy drinking, a history of trauma, a recent loss, a chronic medical illness, and a medication list that contributes to some of it. The central skill of clinical diagnosis is not recall of categories but integration: assembling a coherent and honest account of what is wrong, why it began, what keeps it going, what the person brings to meet it, and what should be done. A diagnosis is the most compact part of that account, and it is only as sound as the thinking behind it.

1. 30.1 The Biopsychosocial Case Formulation
2. 30.2 Selecting and Sequencing Diagnoses
3. 30.3 ICD-10-CM Coding and Documentation
4. 30.4 Children and Adolescents
5. 30.5 Older Adults
6. 30.6 Pregnancy and the Perinatal Period
7. 30.7 Worked Case Studies